| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 5.72 | 196405270_SFN_SLN |
| Juan Pizarro | CHA | 5.59 | 196405280_CHA_OAK |
| Sandy Koufax | LAN | 5.51 | 196405270_LAN_CIN |
| Robin Roberts | BAL | 3.64 | 196405290_BAL_ANA |
| Bob Friend | PIT | 3.24 | 196405270_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Glen Hobbie | CHN | -3.38 | 196405290_ATL_CHN |
| Ray Sadecki | SLN | -2.66 | 196405290_CIN_SLN |
| Art Mahaffey | PHI | -1.48 | 196405270_PHI_PIT |
| Galen Cisco | NYN | -1.44 | 196405280_NYN_CHN |
| Phil Regan | DET | -1.26 | 196405270_DET_BAL |
Based on accumulated WAA for this season up to 1964-05-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.93 | Juan Pizarro | 50.7 | CHA |
| +004+ | 2.87 | Robin Roberts | 74.7 | BAL |
| +005+ | 2.85 | Whitey Ford | 76.3 | NYA |
| +008+ | 2.58 | Juan Marichal | 81.3 | SFN |
| +011+ | 2.46 | Chris Short | 33.3 | PHI |
| +012+ | 2.45 | Jim Bunning | 67.3 | PHI |
| +013+ | 2.37 | Turk Farrell | 67.3 | HOU |
| +016+ | 2.3 | Bob Gibson | 66 | SLN |
| +018+ | 2.22 | Curt Simmons | 72.3 | SLN |
| +017+ | 2.22 | Phil Ortega | 64.3 | LAN |
| +020+ | 2.19 | Don Drysdale | 85 | LAN |
| +022+ | 2.14 | Jack Kralick | 60.3 | CLE |
| +023+ | 2.09 | Jim Maloney | 68.3 | CIN |
| +028+ | 1.98 | Dennis Bennett | 74 | PHI |
| +029+ | 1.89 | John Buzhardt | 48.3 | CHA |
| +033+ | 1.8 | Bob Lee | 46 | ANA |
| +034+ | 1.74 | Wally Bunker | 41 | BAL |
| +035+ | 1.73 | Ken Johnson | 74.7 | HOU |
| +039+ | 1.61 | Bob Bruce | 51 | HOU |
| +043+ | 1.4 | Sandy Koufax | 64.7 | LAN |
| +048+ | 1.34 | Hank Fischer | 59 | ATL |
| +056+ | 1.28 | Jim Duckworth | 24.3 | TEX |
| XXXXX | 1.2 | Galen Cisco | 42.3 | NYN |
| XXXXX | 1.13 | Willie Smith | 25.7 | ANA |
| XXXXX | 1.1 | Roger Craig | 52 | SLN |
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